JP2000345721A - Method for demolishing hollow tower structure - Google Patents
Method for demolishing hollow tower structureInfo
- Publication number
- JP2000345721A JP2000345721A JP11159689A JP15968999A JP2000345721A JP 2000345721 A JP2000345721 A JP 2000345721A JP 11159689 A JP11159689 A JP 11159689A JP 15968999 A JP15968999 A JP 15968999A JP 2000345721 A JP2000345721 A JP 2000345721A
- Authority
- JP
- Japan
- Prior art keywords
- tower
- chimney
- crushing
- crushed
- dismantling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、煙突に代表され
るような中空塔状構造物を解体する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dismantling a hollow tower-like structure represented by a chimney.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】最
近、老朽化したゴミ焼却場の解体工事が盛んに行われて
いる。そのようなゴミ焼却場の煙突を解体する場合、解
体によって発生する粉塵と、それに含まれるダイオキシ
ン等の有害物質が周辺環境を汚染するおそれがある。2. Description of the Related Art In recent years, demolition works of aging garbage incineration plants have been actively performed. When the chimney of such a garbage incineration plant is dismantled, dust generated by the dismantling and harmful substances such as dioxin contained therein may pollute the surrounding environment.
【０００３】そこで、この発明の目的は、煙突に代表さ
れるような中空塔状構造物を解体する場合に、周辺環境
を汚染するおそれを無くすことができる解体方法を提供
することにある。Accordingly, an object of the present invention is to provide a dismantling method capable of eliminating the possibility of polluting the surrounding environment when dismantling a hollow tower-like structure represented by a chimney.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に記載の中空塔状構造物の解体方法は、中
空塔状構造物の下部の壁を貫通して塔内から塔外へ吸引
を行う吸引装置を設け、上記吸引装置を動作させること
によって塔外から上記塔状構造物の上端側開口を通り塔
内下方へ向かう空気の流れを生成しながら、上記塔状構
造物を上端から下方へ向かって順次破砕することを特徴
とする。According to a first aspect of the present invention, there is provided a method for dismantling a hollow tower-like structure, wherein the method comprises the steps of: Providing a suction device for performing suction to the, while operating the suction device to generate a flow of air from outside the tower through the upper end side opening of the tower-like structure toward the inside of the tower downward, while the tower-like structure It is characterized by crushing sequentially from the upper end downward.
【０００５】この請求項１の中空塔状構造物の解体方法
では、中空塔状構造物を上端から下方へ向かって順次破
砕する過程で、吸引装置によって生成された塔外から上
記塔状構造物の上端側開口を通り塔内下方へ向かう空気
の流れに乗って、被破砕部に生じた粉塵が塔内に引き込
まれる。この結果、被破砕部に生じた粉塵が上記塔状構
造物の周辺に飛散するのが防止される。したがって、上
記粉塵に含まれたダイオキシン等の有害物質によって周
辺環境が汚染されるおそれが無くなる。[0005] In the method for dismantling a hollow tower-like structure according to claim 1, in the process of sequentially crushing the hollow tower-like structure downward from the upper end, the above-mentioned tower-like structure is generated from outside the tower generated by a suction device. The dust generated in the portion to be crushed is drawn into the tower by the flow of air flowing downward through the upper end of the tower. As a result, dust generated in the crushed portion is prevented from scattering around the tower-like structure. Therefore, there is no possibility that the surrounding environment will be polluted by harmful substances such as dioxin contained in the dust.
【０００６】請求項２に記載の中空塔状構造物の解体方
法は、請求項１に記載の中空塔状構造物の解体方法にお
いて、上記塔状構造物の被破砕部に、破砕によって生じ
る粉塵を包み込むための泡材を供給することを特徴とす
る。According to a second aspect of the present invention, there is provided a method for dismantling a hollow tower structure according to the first aspect. A foam material for enclosing the foam.
【０００７】この請求項２の中空塔状構造物の解体方法
では、破砕によって生じた粉塵が被破砕部に供給された
泡材に包み込まれ、この泡材とともに上述の空気の流れ
に乗って塔内に引き込まれる。したがって、破砕によっ
て生じた粉塵が上記塔状構造物の周辺に飛散するのがさ
らに効果的に防止される。In the method for dismantling a hollow tower-like structure according to the second aspect, the dust generated by the crushing is wrapped in the foam material supplied to the portion to be crushed. Drawn into. Therefore, the dust generated by the crushing is more effectively prevented from scattering around the tower-like structure.
【０００８】請求項３に記載の中空塔状構造物は、請求
項１に記載の中空塔状構造物の解体方法において、上記
塔状構造物の上端破砕部を覆い部材で覆い、上記塔状構
造物の外周面と覆い部材の下端開口部との間に空気の通
路を形成したことを特徴とする。According to a third aspect of the present invention, in the method for dismantling a hollow tower structure according to the first aspect, the upper end crushing portion of the tower structure is covered with a covering member, and An air passage is formed between the outer peripheral surface of the structure and the lower end opening of the covering member.
【０００９】この請求項３の中空塔状構造物の解体方法
では、破砕によって塔状構造物の外周で生じた粉塵が塔
状構造物の外周面と覆い部材の下端開口部との間に形成
された空気の通路を流れる空気の流れに乗って塔内に引
き込まれる。したがって、破砕によって塔状構造物の外
周で生じた粉塵が周辺に飛散するのがさらに効果的に防
止される。In the method for dismantling a hollow tower-like structure according to claim 3, dust generated on the outer periphery of the tower-like structure by crushing is formed between the outer peripheral surface of the tower-like structure and the lower end opening of the covering member. It is drawn into the tower on the flow of air flowing through the air passage. Therefore, the dust generated on the outer periphery of the tower-like structure due to the crushing is more effectively prevented from scattering around.
【００１０】[0010]
【発明の実施の形態】以下、この発明を図示の実施の形
態により詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
【００１１】図１において、１は解体すべき中空塔状構
造物としての煙突を示している。In FIG. 1, reference numeral 1 denotes a chimney as a hollow tower-like structure to be dismantled.
【００１２】この発明の一実施形態の解体方法では、煙
突１よりも背の高いブーム３を備えた走行式のクレーン
２と、上記クレーン２のブーム３にクレーンのワイヤ及
びフックを介してワイヤ６で吊り下げられた破砕装置５
を用いる。In the dismantling method according to one embodiment of the present invention, a traveling crane 2 having a boom 3 taller than a chimney 1 and a wire 6 connected to the boom 3 of the crane 2 via a wire and a hook of the crane. Crusher 5 suspended by
Is used.
【００１３】図２に示すように、上記破砕装置５は、オ
イルタンクを兼ねる台２１上に、エンジン２２と油圧ポ
ンプ２６と油圧モータ２７とエンジン付発電機３１と無
線操縦装置３２を搭載している。上記エンジン２２の回
転力は、減速歯車装置２３を介して油圧ポンプ２６に伝
えられる。上記油圧ポンプ２６と油圧モータ２７とは図
示しない油圧配管によって連結している。エンジン付発
電機３１は無線操縦装置３２や後述するテレビジョンカ
メラ(以下、テレビカメラという。)７等に電力を供給す
る。上記台２１は吊環に連結したワイヤ６によってクレ
ーン２に吊り下げている。台２１に設けた主軸３５の下
端に旋回フレーム３４を取り付けている。この主軸３５
は油圧モータ２７によってベベルギヤ３７,３８を介し
て正逆自在に回転できるようになっている。As shown in FIG. 2, the crushing apparatus 5 has an engine 22, a hydraulic pump 26, a hydraulic motor 27, a generator 31 with an engine, and a radio control device 32 mounted on a base 21 also serving as an oil tank. I have. The torque of the engine 22 is transmitted to a hydraulic pump 26 via a reduction gear device 23. The hydraulic pump 26 and the hydraulic motor 27 are connected by a hydraulic pipe (not shown). The generator 31 with an engine supplies electric power to the radio control device 32, a television camera (hereinafter referred to as a television camera) 7 described below, and the like. The table 21 is suspended from the crane 2 by wires 6 connected to a suspension ring. The turning frame 34 is attached to the lower end of the main shaft 35 provided on the table 21. This spindle 35
Is designed to be rotatable forward and backward by hydraulic motor 27 via bevel gears 37 and 38.
【００１４】上記旋回フレーム３４の端部から下方に突
出する部分には、この破砕装置５の破砕腕１２２，１２
６の作動を監視するためテレビカメラ７を取り付けてい
る。また、クレーン２のブーム３にはこの破砕装置５全
体を監視するためのテレビカメラ５７を取り付けてい
る。これらのテレビカメラ７，５７の映像は、図１中の
クレーン２の運転台に設けたテレビジョン受像機(以
下、テレビ受像機という。)８や、破砕装置のための操
作室１０中に設けたテレビ受像機９へ送られる。The crushing arms 122, 12 of the crushing device 5 are provided at portions protruding downward from the ends of the revolving frame 34.
A television camera 7 is attached to monitor the operation of the camera 6. A television camera 57 for monitoring the entire crushing device 5 is attached to the boom 3 of the crane 2. The images of the television cameras 7 and 57 are provided in a television receiver (hereinafter, referred to as a television receiver) 8 provided in a cab of the crane 2 in FIG. 1 and an operation room 10 for a crusher. Is sent to the television receiver 9.
【００１５】図２中に示した主軸３５の上端には、配管
等の捩れを防止するためのロータリジョイント２９を設
けている。このロータリジョイント２９と主軸３５を通
る貫通穴とを介して、クレーン２からの図示しない油圧
ホースおよび電線を後記する油圧シリンダ１２３,１２
７, テレビカメラ７に導いている。また、ロータリジョ
イント２９と主軸３５を通る貫通穴とを介して、クレー
ン２からの図示しない泡材供給ホースを破砕腕１２２，
１２６の上方に設けた泡材供給ホース１８１へ接続して
いる。A rotary joint 29 is provided at the upper end of the main shaft 35 shown in FIG. Through this rotary joint 29 and a through hole passing through the main shaft 35, hydraulic cylinders 123, 12 (not shown) from the crane 2 for connecting hydraulic hoses and electric wires (not shown).
7, led to the TV camera 7. Further, a foam material supply hose (not shown) from the crane 2 is crushed through the rotary joint 29 and a through hole passing through the main shaft 35, and the crushing arms 122,
It is connected to a foam material supply hose 181 provided above 126.
【００１６】上記旋回フレーム３４には略Ｌ字形状の固
定破砕腕１２２を姿勢傾斜用の油圧シリンダ１２３とリ
ンク１２４により吊り下げている。上記固定破砕腕１２
２の水平部の中央に設けた軸１２５に、可動破砕腕１２
６の一端を枢着している。上記固定破砕腕１２２の上端
部と可動破砕腕１２６の中央部とを破砕動用の油圧シリ
ンダ１２７で連結して、この油圧シリンダ１２７の伸縮
作動により、固定破砕腕１２２の先端部１２２aと可動
破砕腕１２６の先端部１２６aとが接離作動して、被破
砕部２８を圧砕するようにしている。上記固定破砕腕１
２２の先端部１２２aの突起１５５と可動破砕腕１２６
の先端部１２６aの突起１５６とは、圧砕時に被破砕部
２８に集中的に力を加えて、破壊を促進する。A substantially L-shaped fixed crushing arm 122 is suspended from the revolving frame 34 by a hydraulic cylinder 123 and a link 124 for tilting the posture. The fixed crushing arm 12
The movable crushing arm 12 is attached to a shaft 125 provided at the center of the horizontal
One end of 6 is pivoted. The upper end of the fixed crushing arm 122 and the center of the movable crushing arm 126 are connected by a hydraulic cylinder 127 for crushing movement, and the distal end 122a of the fixed crushing arm 122 and the movable crushing arm are operated by the expansion / contraction operation of the hydraulic cylinder 127. The distal end portion 126a of the cylinder 126 is moved toward and away from the crushed portion 28 to crush the portion to be crushed. Fixed crushing arm 1
The projection 155 of the tip 122a of the slab 22 and the movable crushing arm 126
The projection 156 of the tip 126a of the crushed portion intensively applies a force to the portion to be crushed 28 during crushing, thereby promoting destruction.
【００１７】また、上記固定破砕腕１２２の先端部１２
２aには、この先端部１２２aの背部と両側部を覆い、可
動破砕腕１２２側へ開いた断面コの字状の落下防止部材
１３５を設けている。上記落下防止部材１３５の背部と
固定破砕腕１２２の背部との間にコイルバネ１３6を介
設し、上記固定破砕腕１２２に落下防止部材１３５をボ
ルト・ナット１３７で固定している。自然状態では、落
下防止部材１３５は、先端部１２２ａよりも可動破砕腕
１２２側へ突出している。固定破砕腕１２２を被破砕部
２８の外面２８ｂに当接させると、コイルバネ１３６が
伸張し、落下防止部材１３５は先端部１２２aに対して
相対的に後退して、被破砕部２８を押圧することにな
る。そして、被破砕部２８が破砕されると、破砕片は、
コイルバネ１３６によって内側へ付勢されている落下防
止部材１３５によって、煙突１の内側へ押しやられる。
したがって、破砕片が煙突１外側へ落下するのを防止で
きる。Further, the tip 12 of the fixed crushing arm 122
2a is provided with a fall prevention member 135 that covers the back and both sides of the distal end portion 122a and that opens toward the movable crushing arm 122 and has a U-shaped cross section. A coil spring 136 is provided between the back of the fall prevention member 135 and the back of the fixed crush arm 122, and the fall prevention member 135 is fixed to the fixed crush arm 122 with bolts and nuts 137. In the natural state, the fall prevention member 135 protrudes toward the movable crushing arm 122 beyond the distal end portion 122a. When the fixed crushing arm 122 is brought into contact with the outer surface 28b of the crushed portion 28, the coil spring 136 is extended, and the fall prevention member 135 is relatively retracted with respect to the tip portion 122a to press the crushed portion 28. become. When the crushed portion 28 is crushed, the crushed pieces are
The chimney 1 is pushed inward by the fall prevention member 135 urged inward by the coil spring 136.
Therefore, it is possible to prevent the crushed pieces from falling outside the chimney 1.
【００１８】なお、上記固定破砕腕１２２の軸１２５近
傍の奥部には横鉄筋切断用の固定刃１３１を設ける一
方、可動破砕腕１２６の軸１２５近傍の奥部には横鉄筋
切断用の可動刃１３２を設けている。さらに、上記固定
破砕腕１２２には縦鉄筋切断用の固定刃１３３を水平方
向に突出させる一方、可動破砕腕１２６には縦鉄筋切断
用の可動刃１３４を水平方向に突出させている。また、
上記固定破砕腕１２２の上部内側には両側方に広がりか
つ下方に湾曲した鋼板からなるスカート１７２を設けて
いる。このスカート１７２によって、破砕装置５の荷重
を、被破砕部２８のコンクリート中から露出した縦鉄筋
の上端に掛けて、縦鉄筋を煙突１の内側に曲げるように
している。曲げられて所定の長さになった鉄筋は、縦鉄
筋切断用の固定刃１３３,可動刃１３４や横鉄筋切断用
の固定刃１３１,可動刃１３２によって切断される。A fixed blade 131 for cutting a horizontal reinforcing bar is provided at a depth near the shaft 125 of the fixed crushing arm 122, while a movable blade for cutting horizontal bar is provided at a depth near the shaft 125 of the movable crushing arm 126. A blade 132 is provided. Further, the fixed crushing arm 122 has a fixed blade 133 for cutting a vertical reinforcing bar projected horizontally, while the movable crushing arm 126 has a movable blade 134 for cutting a vertical reinforcing bar projected horizontally. Also,
A skirt 172 made of a steel plate that extends to both sides and is curved downward is provided inside the upper portion of the fixed crushing arm 122. The skirt 172 applies the load of the crushing device 5 to the upper end of the vertical reinforcing bar exposed from the concrete of the portion to be crushed 28 so that the vertical reinforcing bar is bent inside the chimney 1. The rebar bent to a predetermined length is cut by a fixed blade 133 and a movable blade 134 for cutting a vertical bar, and a fixed blade 131 and a movable blade 132 for cutting a horizontal bar.
【００１９】また、簡単のため図２では省略している
が、万一破砕片が煙突１の外側に落下したときに備え
て、図４中に示すように破砕装置５の固定破砕腕１２２
に破砕片受け１９１を吊り下げている。この破砕片受け
１９１は、破砕片を受けるバケット１９４と、このバケ
ット１９４を吊り下げるための吊り下げ腕１９５とを備
えている。吊り下げ腕１９５の上端部は、油圧モータに
よって回転される送りねじ１９３に係合している。送り
ねじ１９３を回転させることによって、バケット１９４
を固定破砕腕１２２に対して接近又は離間させて、位置
調整することができる。なお、バケット１９４の底板１
９４ｂは油圧シリンダによって開閉可能である。Although not shown in FIG. 2 for the sake of simplicity, the fixed crushing arm 122 of the crushing device 5 is used as shown in FIG.
The crushed piece receiver 191 is suspended. The crushed piece receiver 191 includes a bucket 194 for receiving the crushed piece, and a hanging arm 195 for hanging the bucket 194. The upper end of the suspension arm 195 is engaged with a feed screw 193 rotated by a hydraulic motor. By rotating the feed screw 193, the bucket 194 is rotated.
Can be moved toward or away from the fixed crushing arm 122 to adjust the position. The bottom plate 1 of the bucket 194
94b can be opened and closed by a hydraulic cylinder.
【００２０】図３中には、吸引装置としての集塵機２０
０を示している。この集塵機２００は、市販のもの（商
品名「ターボフィルタ」，機種・形式ＳＪＦ９００−４
４／２０）であり、本体２０１にカートリッジ方式で交
換可能なフィルタ２０３と、図示しないモータによって
回転駆動されるファン２０４を搭載している。ファン２
０４が回転駆動されると、空気が吸込みダクト２０２を
通して本体２０１内に取り込まれ、その空気に含まれた
粉塵がフィルタ２０３でろ過される。ろ過によって清浄
化された空気は排気口２０５を通して本体２０１の外へ
排気される。この例では、集塵機２００の処理風量は５
００ｍ3／ｍｉｎである。なお、集塵機のフィルタに活
性炭を使用すればダイオキシン等の有毒物が除去でき
る。FIG. 3 shows a dust collector 20 as a suction device.
0 is shown. This dust collector 200 is commercially available (trade name “Turbo Filter”, model / model SJF900-4).
4/20), the main body 201 is equipped with a filter 203 that can be replaced by a cartridge system and a fan 204 that is driven to rotate by a motor (not shown). Fan 2
When the 04 is driven to rotate, air is taken into the main body 201 through the suction duct 202, and the dust contained in the air is filtered by the filter 203. The air purified by the filtration is exhausted to the outside of the main body 201 through the exhaust port 205. In this example, the processing air volume of the dust collector 200 is 5
00 m 3 / min. If activated carbon is used for the filter of the dust collector, toxic substances such as dioxin can be removed.
【００２１】煙突１の解体は次のようにして行う。The chimney 1 is dismantled as follows.
【００２２】 まず図３に示すように、解体すべき煙
突１の下部１ｂの壁を内外に貫通して下部開口２１０を
形成する。この下部開口２１０の高さは、解体に伴って
煙突内下部に堆積した破砕片によって下部開口２１０が
塞がれるのを防ぐために、煙突の根元よりも若干高いレ
ベルに設定しておく。First, as shown in FIG. 3, a lower opening 210 is formed by penetrating the wall of the lower portion 1 b of the chimney 1 to be dismantled in and out. The height of the lower opening 210 is set to a level slightly higher than the root of the chimney in order to prevent the lower opening 210 from being blocked by debris accumulated in the lower portion of the chimney due to dismantling.
【００２３】 次に、この下部開口２１０に、煙突１
の外部に設置した集塵機２００の吸込みダクト２０２を
接続する。そして、この集塵機２００を動作させること
によって、煙突外部から煙突の上端側開口１ｃを通り煙
突内部に下方へ向かう空気の流れＦを生成する。集塵機
２００の処理風量は５００ｍ3／ｍｉｎ．であるから、
例えば煙突１の内径が２０００ｍｍであれば、流速とし
て２．６５ｍ／ｓｅｃを得ることができる。なお、煙突
１の下部１ｂに既設の開口があれば、わざわざ下部開口
２１０を形成せずに、その開口を利用しても良い。Next, the chimney 1
Is connected to the suction duct 202 of the dust collector 200 installed outside. By operating the dust collector 200, a flow F of air flowing downward from the outside of the chimney through the upper end side opening 1c of the chimney to the inside of the chimney is generated. The processing air volume of the dust collector 200 is 500 m 3 / min. Because
For example, if the inner diameter of the chimney 1 is 2000 mm, a flow velocity of 2.65 m / sec can be obtained. If there is an existing opening in the lower portion 1b of the chimney 1, the opening may be used without forming the lower opening 210.
【００２４】 このように煙突１を通る空気の流れＦ
を生成した状態で、図１に示すように、クレーン２の運
転手１１は運転台でテレビ受像機８を見ながらクレーン
２で破砕装置５を煙突１の上端よりも高く吊り上げる。
破砕装置５の操作員１２は地上の操作室１０からアンテ
ナ７１を介して図２中に示した無線操縦装置３２のアン
テナ３３に操縦指令を送り、エンジン２２を駆動し、エ
ンジン付発電機３１を駆動する。そして、テレビ受像機
９を見ながら、油圧ポンプ２６から油圧モータ２７に油
を供給して、旋回フレーム３４を被破砕部２８（最初は
上端１ａ）に合わせた角度位置まで旋回させる。さら
に、破砕動用の油圧シリンダ１２７を引き込み作動させ
て、可動破砕腕１２６を開放作動させる。その後、クレ
ーン２の運転手１１がテレビ受像機８を見ながら破砕装
置５を下降させて、図４に示すように固定破砕腕１２２
と可動破砕腕１２６の間に被破砕部２８を挿入する。こ
のとき、運転手１１と操作員１２が音声通信装置１３で
連絡を取り合いながら破砕装置５の位置や姿勢を調整す
る。同様に、破砕片受け１９１の位置や姿勢を、バケッ
ト１９４が被破砕部２８の外周面に密接するように調整
する。Thus, the flow F of air passing through the chimney 1
1, the driver 11 of the crane 2 lifts the crusher 5 higher than the upper end of the chimney 1 with the crane 2 while watching the television receiver 8 on the cab as shown in FIG.
The operator 12 of the crushing device 5 sends a steering command from the operation room 10 on the ground to the antenna 33 of the wireless steering device 32 shown in FIG. 2 via the antenna 71 to drive the engine 22 and turn on the generator 31 with the engine. Drive. Then, while watching the television receiver 9, oil is supplied from the hydraulic pump 26 to the hydraulic motor 27, and the revolving frame 34 is revolved to an angular position corresponding to the crushed portion 28 (the upper end 1a at first). Further, the hydraulic cylinder 127 for crushing movement is pulled in to operate, and the movable crushing arm 126 is opened. Thereafter, the driver 11 of the crane 2 lowers the crushing device 5 while watching the television receiver 8, and as shown in FIG.
The portion to be crushed 28 is inserted between the crushable arm 126 and the movable crushing arm 126. At this time, the driver 11 and the operator 12 adjust the position and the posture of the crushing device 5 while communicating with each other through the voice communication device 13. Similarly, the position and posture of the crushed piece receiver 191 are adjusted so that the bucket 194 is in close contact with the outer peripheral surface of the crushed portion 28.
【００２５】 その後、操作員１２は、泡剤供給ホー
ス１８１を通して例えば石鹸液のような泡材２１１を被
破砕部２８へ供給しながら、破砕動用の油圧シリンダ１
２７を伸張させて固定破砕腕１２２と可動破砕腕１２６
で被破砕部２８を挟む。これにより、被破砕部２８を破
砕する。このようにして、煙突１を上端１ａから下方へ
向かって螺旋状に順次破砕してゆく。Thereafter, the operator 12 supplies the foaming material 211 such as a soap solution to the crushed portion 28 through the foaming material supply hose 181 while the crushing hydraulic cylinder 1
27, the fixed crushing arm 122 and the movable crushing arm 126
The portion to be crushed 28 is sandwiched between. Thus, the crushed portion 28 is crushed. In this manner, the chimney 1 is sequentially crushed in a spiral from the upper end 1a downward.
【００２６】この破砕の過程で、被破砕部２８に生じた
コンクリート片等の破砕片は、落下防止部材１３５によ
って煙突１の内側に押しやられる。したがって、破砕片
が煙突１の外側へ落下するのが防止される。また、万一
コンクリート等の破砕片が煙突１の外側へ落下した場合
は、その破砕片は破砕片受け１９１のバケット１９４に
よって受けられる。したがって、施工上の安全を確保で
きる。In the process of crushing, crushed pieces such as concrete pieces generated in the crushed portion 28 are pushed into the chimney 1 by the fall prevention member 135. Therefore, the crushed pieces are prevented from falling outside the chimney 1. If crushed pieces such as concrete fall to the outside of the chimney 1, the crushed pieces are received by the bucket 194 of the crushed piece receiver 191. Therefore, construction safety can be ensured.
【００２７】さらに、被破砕部２８に生じた粉塵は、泡
剤供給ホース１８１を通して供給された泡材２１１に包
み込まれる。そして、泡材２１１とともに、上述の空気
の流れＦに乗って煙突内に引き込まれる。この結果、被
破砕部２８に生じた粉塵が煙突１の周辺に飛散するのを
防止できる。したがって、上記粉塵に含まれたダイオキ
シン等の有害物質によって周辺環境が汚染されるおそれ
を無くすことができる。Further, the dust generated in the crushed portion 28 is wrapped in the foam material 211 supplied through the foam supply hose 181. Then, it is drawn into the chimney along with the above-described air flow F together with the foam material 211. As a result, it is possible to prevent the dust generated in the crushed portion 28 from scattering around the chimney 1. Therefore, it is possible to eliminate the possibility that the surrounding environment is contaminated by harmful substances such as dioxin contained in the dust.
【００２８】なお、この破砕の過程で、煙突１の内側へ
落下した破砕片が煙突内下部に堆積する。この破砕片に
よって下部開口２１０が塞がれるのを防ぐために、煙突
下部の図示しない扉や開口を通して、煙突内下部に堆積
した破砕片を順次煙突外へ搬出するのが望ましい。In the process of crushing, crushed pieces that have fallen into the chimney 1 accumulate in the lower portion of the chimney. In order to prevent the lower opening 210 from being blocked by the crushed pieces, it is desirable to sequentially carry out the crushed pieces accumulated in the lower portion of the chimney to the outside of the chimney through doors and openings (not shown) at the lower portion of the chimney.
【００２９】上記では煙突１の下部から吸引して、煙突
内部に下方に向かう空気の流れを生成するとともに煙突
の被破砕部２８に泡材を供給して、破砕時の粉塵が飛散
するのを防止する方法について述べたが、さらに図５に
示すように、煙突の上端破砕部を覆い部材で覆い、破砕
時に煙突の外周部で発生する粉塵を煙突内部に吸引する
と粉塵の飛散をさらに少なくすることができる。In the above, the air is sucked from the lower part of the chimney 1 to generate a downward air flow inside the chimney and supplies foam material to the crushed portion 28 of the chimney to prevent the dust at the time of crushing from scattering. Although the method of preventing the dust is described, as shown in FIG. 5, the upper end crushing portion of the chimney is covered with a covering member, and the dust generated at the outer peripheral portion of the chimney at the time of crushing is sucked into the chimney to further reduce the scattering of the dust. be able to.
【００３０】具体的には、破砕装置５の旋回フレーム３
４に水平円形方向に延出する複数の覆い支持アーム３０
１を取付け、その上にシート状の覆い部材３０２を帳設
すると共に支持アーム３０１の先端から下方に少なくと
も煙突の被破砕部２８の高さ位置まで延在させ、その下
端部にリング状の重り３０３を取付け、覆い３００を構
成する。この覆い３００の径は、煙突の径よりも大きく
設定しておく。これにより、煙突の上端破砕部の外周に
空気の通路が形成される。Specifically, the turning frame 3 of the crushing device 5
4, a plurality of cover support arms 30 extending in a horizontal circular direction.
1, a sheet-like covering member 302 is mounted thereon, and the sheet-like covering member 302 extends downward from the tip of the support arm 301 to at least the height of the crushable portion 28 of the chimney. Attach 303 to form the cover 300. The diameter of the cover 300 is set to be larger than the diameter of the chimney. Thereby, an air passage is formed on the outer periphery of the upper end crushing portion of the chimney.
【００３１】このような覆い３００を設けた上、煙突１
の下部から吸引すると、煙突の上端破砕部では、空気が
いったん煙突外周から上方に向かって流れて、覆い３０
０の内部に流入し、しかるのちに煙突１の内部下方に向
かって流れる。したがって、破砕装置５の外側破砕腕１
２２と内側破砕腕１２６で被破砕部２８を挟むとき外側
破砕腕１２２側で発生する粉塵は煙突の外周へ飛散する
ことなく、煙突内部に吸引される。After providing such a cover 300, the chimney 1
When the air is sucked from the lower part of the chimney, the air once flows upward from the periphery of the chimney at the crushing part of the upper end of the chimney, and the covering 30
0, and then flows downward inside the chimney 1. Therefore, the outer crushing arm 1 of the crushing device 5
Dust generated on the outer crushing arm 122 side when the crushed portion 28 is sandwiched between the inner crushing arm 22 and the inner crushing arm 126 is sucked into the chimney without scattering to the outer periphery of the chimney.
【００３２】図６は、上記クレーン２や破砕装置５を用
いることなく、人力で煙突１の解体を行う別の実施形態
を示している。FIG. 6 shows another embodiment in which the chimney 1 is dismantled manually without using the crane 2 or the crushing device 5.
【００３３】この実施形態では、煙突１の解体は次のよ
うにして行う。In this embodiment, the chimney 1 is dismantled as follows.
【００３４】 まず、先の実施形態と同様に、解体す
べき煙突１の下部１ｂの壁を内外に貫通して下部開口２
１０を形成する。この下部開口２１０の高さは、解体に
伴って煙突内下部に堆積した破砕片によって下部開口２
１０が塞がれるのを防ぐために、煙突の根元よりも若干
高いレベルに設定しておく。First, as in the previous embodiment, the lower opening 2 is formed by penetrating the wall of the lower portion 1 b of the chimney 1 to be dismantled in and out.
Form 10. The height of the lower opening 210 depends on the debris accumulated in the lower part of the chimney due to dismantling.
In order to prevent 10 from being blocked, it is set to a level slightly higher than the root of the chimney.
【００３５】 次に、煙突１の周囲に、作業者３０
１，３０２のための足場３００を構築する。Next, around the chimney 1, the worker 30
Build a scaffold 300 for 1302.
【００３６】 次に、上記下部開口２１０に、煙突１
の外部に設置した集塵機２００の吸込みダクト２０２を
接続する。そして、この集塵機２００を動作させること
によって、煙突外部から煙突の上端側開口１ｃを通り煙
突内部を下方へ向かう空気の流れＦを生成する。Next, the chimney 1 is inserted into the lower opening 210.
Is connected to the suction duct 202 of the dust collector 200 installed outside. Then, by operating the dust collector 200, a flow F of air flowing downward from the outside of the chimney through the upper end side opening 1c of the chimney and inside the chimney is generated.
【００３７】 このように煙突１を通る空気の流れＦ
を生成した状態で、作業者３０１，３０２がコンクリー
ト破砕用の工具を用いて煙突１を上端１ａから下方へ向
かって順次破砕してゆく。Thus, the flow F of air passing through the chimney 1
Are generated, the workers 301 and 302 sequentially crush the chimney 1 downward from the upper end 1a using a concrete crushing tool.
【００３８】この実施形態でも、被破砕部に生じた粉塵
は、上述の空気の流れＦに乗って煙突内に引き込まれ
る。この結果、被破砕部に生じた粉塵が煙突１の周辺に
飛散するのを防止できる。したがって、上記粉塵に含ま
れたダイオキシン等の有害物質によって周辺環境が汚染
されるおそれを無くすことができる。また、破砕作業中
に作業者３０１，３０２が被破砕部に生じた粉塵を吸い
込むのを防止でき、作業者の健康が損なわれるのを避け
ることができる。Also in this embodiment, the dust generated in the crushed portion is drawn into the chimney on the above-described air flow F. As a result, it is possible to prevent the dust generated in the crushed portion from scattering around the chimney 1. Therefore, it is possible to eliminate the possibility that the surrounding environment is contaminated by harmful substances such as dioxin contained in the dust. In addition, it is possible to prevent the workers 301 and 302 from inhaling dust generated in the crushed portion during the crushing operation, and to prevent the health of the workers from being impaired.
【００３９】なお、各実施形態では煙突の解体について
述べたが、解体すべき構造物は煙突に限らないことは当
然である。この発明は中空塔状構造物の解体に広く適用
することができる。In each of the embodiments, the chimney is dismantled. However, it is obvious that the structure to be dismantled is not limited to the chimney. The present invention can be widely applied to the dismantling of a hollow tower-like structure.
【００４０】[0040]
【発明の効果】以上より明らかなように、請求項１の中
空塔状構造物の解体方法では、中空塔状構造物を上端か
ら下方へ向かって順次破砕する過程で、吸引装置によっ
て生成された塔外から上記塔状構造物の上端側開口を通
り塔内下方へ向かう空気の流れに乗って、被破砕部に生
じた粉塵が塔内に引き込まれる。この結果、被破砕部に
生じた粉塵が上記塔状構造物の周辺に飛散するのを防止
でき、上記粉塵に含まれたダイオキシン等の有害物質に
よって周辺環境が汚染されるおそれを無くすことができ
る。As is apparent from the above description, in the method for dismantling a hollow tower-like structure according to the first aspect, the hollow tower-like structure is generated by a suction device in the process of sequentially crushing the hollow tower-like structure from the upper end to the lower side. Dust generated in the portion to be crushed is drawn into the tower by the flow of air flowing from the outside of the tower through the upper end side opening of the tower-like structure and downward in the tower. As a result, it is possible to prevent the dust generated in the crushed part from scattering around the tower-like structure, and to eliminate the possibility that the surrounding environment is polluted by harmful substances such as dioxin contained in the dust. .
【００４１】請求項２の中空塔状構造物の解体方法で
は、破砕によって生じた粉塵が被破砕部に供給された泡
材に包み込まれ、この泡材とともに上述の空気の流れに
乗って塔内に引き込まれるので、破砕によって生じた粉
塵が上記塔状構造物の周辺に飛散するのをさらに効果的
に防止できる。In the method for dismantling the hollow tower-like structure according to the second aspect, the dust generated by the crushing is wrapped in the foam material supplied to the portion to be crushed, and rides on the flow of air together with the foam material to form the inside of the tower. Therefore, the dust generated by the crushing can be more effectively prevented from scattering around the tower-like structure.
【００４２】請求項３の中空塔状構造物の解体方法で
は、破砕によって塔状構造物の外周で生じた粉塵が塔状
構造物の外周面と覆い部在の下端開口部との間に形成さ
れた空気の通路を流れる空気の流れに乗って塔内に引き
込まれる。したがって、破砕によって塔状構造物の外周
で生じた粉塵が周辺に飛散するのがさらに効果的に防止
される。In the method for dismantling a hollow tower-like structure according to claim 3, dust generated on the outer periphery of the tower-like structure by crushing is formed between the outer peripheral surface of the tower-like structure and the lower end opening of the covering portion. It is drawn into the tower on the flow of air flowing through the air passage. Therefore, the dust generated on the outer periphery of the tower-like structure due to the crushing is more effectively prevented from scattering around.
【図１】 この発明の一実施形態の中空塔状構造物の解
体方法を実施するのに用いるクレーンと破砕装置を示す
図である。FIG. 1 is a diagram showing a crane and a crushing device used for carrying out a method for dismantling a hollow tower-shaped structure according to an embodiment of the present invention.
【図２】 上記破砕装置を詳細に示す図である。FIG. 2 is a diagram showing the crushing device in detail.
【図３】 集塵機を用いて、煙突外部から煙突の上端側
開口を通り煙突内部を下方へ向かう空気の流れを生成し
た状態を示す図である。FIG. 3 is a diagram illustrating a state in which a dust collector is used to generate a flow of air flowing from the outside of the chimney to the inside of the chimney through the upper end side opening of the chimney;
【図４】 上記中空塔状構造物の解体方法によって煙突
を破砕する様子を示す図である。FIG. 4 is a diagram showing a state in which a chimney is crushed by the method for dismantling the hollow tower-like structure.
【図５】 上記破砕装置に覆いを設けた状態を示す図で
ある。FIG. 5 is a diagram showing a state in which a cover is provided on the crushing device.
【図６】 この発明の別の実施形態の中空塔状構造物の
解体方法を説明する図である。FIG. 6 is a diagram illustrating a method for dismantling a hollow tower-shaped structure according to another embodiment of the present invention.
１ 煙突 ２ クレーン ５ 破砕装置 ２００ 集塵機 DESCRIPTION OF SYMBOLS 1 Chimney 2 Crane 5 Crusher 200 Dust collector
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年４月１９日（２０００．４．１
９）[Submission date] April 19, 2000 (2004.1.
9)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項２[Correction target item name] Claim 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】請求項２に記載の中空塔状構造物の解体方
法は、中空塔状構造物を上端から下方へ向かって順次破
砕する中空塔状構造物の解体方法において、上記塔状構
造物の被破砕部に、破砕によって生じる粉塵を包み込む
ための泡材を供給することを特徴とする。The method for dismantling a hollow tower-like structure according to claim 2 is a method for dismantling a hollow tower-like structure in which the hollow tower-like structure is sequentially crushed downward from an upper end. It is characterized in that a foam material for enclosing dust generated by crushing is supplied to the crushed portion.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】この請求項２の中空塔状構造物の解体方法
では、中空塔状構造物を上端から下方へ向かって順次破
砕する過程で、破砕によって生じた粉塵が被破砕部に供
給された泡材に包み込まれる。したがって、破砕によっ
て生じた粉塵が上記塔状構造物の周辺に飛散するのが効
果的に防止される。In the method for dismantling the hollow tower-like structure according to the second aspect, in the process of sequentially crushing the hollow tower-like structure from the upper end to the lower side, the dust generated by the crushing is supplied to the bubble supplied to the portion to be crushed. Wrapped in wood. Therefore, the dust generated by the crushing is effectively prevented from scattering around the tower-like structure.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００４１[Correction target item name] 0041
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００４１】請求項２の中空塔状構造物の解体方法で
は、中空塔状構造物を上端から下方へ向かって順次破砕
する過程で、破砕によって生じた粉塵が被破砕部に供給
された泡材に包み込まれるので、破砕によって生じた粉
塵が上記塔状構造物の周辺に飛散するのを効果的に防止
できる。In the method for dismantling a hollow tower-like structure according to a second aspect, in the process of sequentially crushing the hollow tower-like structure from the upper end to the lower side, dust generated by the crushing is supplied to the crushed portion by the foam material. Therefore, dust generated by crushing can be effectively prevented from scattering around the tower-like structure.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉川 賢治 大阪府大阪市阿倍野区松崎町２丁目２番２ 号 株式会社奥村組内 (72)発明者 古長 達廣 大阪府大阪市阿倍野区松崎町２丁目２番２ 号 株式会社奥村組内 Ｆターム(参考） 2E176 DD01 DD64 ──────────────────────────────────────────────────続 き Continued on the front page (72) Kenji Yoshikawa 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Inside Okumura Gumi Co., Ltd. Chome No.2-2 Okumura Gumi Co., Ltd. F-term (reference) 2E176 DD01 DD64
Claims (3)
内から塔外へ吸引を行う吸引装置を設け、上記吸引装置
を動作させることによって塔外から上記塔状構造物の上
端側開口を通り塔内下方へ向かう空気の流れを生成しな
がら、上記塔状構造物を上端から下方へ向かって順次破
砕することを特徴とする中空塔状構造物の解体方法。1. A suction device which penetrates a lower wall of a hollow tower-like structure and suctions the inside of the tower from the inside of the tower, and the upper end of the tower-like structure from the outside of the tower by operating the suction device. A method for dismantling a hollow tower-like structure, comprising sequentially crushing the above-mentioned tower-like structure from an upper end to a lower side while generating a flow of air flowing downward in a tower through a side opening.
方法において、 上記塔状構造物の被破砕部に、破砕によって生じる粉塵
を包み込むための泡材を供給することを特徴とする中空
塔状構造物の解体方法。2. The method for dismantling a hollow tower-shaped structure according to claim 1, wherein a foam material for enclosing dust generated by crushing is supplied to a portion to be crushed of the tower-shaped structure. A method for dismantling a hollow tower structure.
方法において、 上記塔状構造物の上端破砕部を覆い部材で覆い、上記塔
状構造物の外周面と覆い部材の下端開口部との間に空気
の通路を形成したことを特徴とする中空塔状構造物の解
体方法。3. The method for dismantling a hollow tower-shaped structure according to claim 1, wherein a top crushing portion of the tower-shaped structure is covered with a covering member, and an outer peripheral surface of the tower-shaped structure and a lower end opening of the covering member. A method for dismantling a hollow tower-shaped structure, wherein an air passage is formed between the hollow tower-shaped structure and the air passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15968999A JP3784997B2 (en) | 1999-06-07 | 1999-06-07 | Method of dismantling hollow tower structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15968999A JP3784997B2 (en) | 1999-06-07 | 1999-06-07 | Method of dismantling hollow tower structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000345721A true JP2000345721A (en) | 2000-12-12 |
| JP3784997B2 JP3784997B2 (en) | 2006-06-14 |
Family
ID=15699179
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15968999A Expired - Lifetime JP3784997B2 (en) | 1999-06-07 | 1999-06-07 | Method of dismantling hollow tower structure |
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| Country | Link |
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| JP (1) | JP3784997B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003176911A (en) * | 2001-12-10 | 2003-06-27 | Taisei Corp | Stack demolition device, and method of demolition of stack |
| JP2006283473A (en) * | 2005-04-04 | 2006-10-19 | Okumura Corp | Disassembling system and disassembling method of tower structure |
| JP2008202294A (en) * | 2007-02-20 | 2008-09-04 | Okumura Corp | Demolishing apparatus |
| JP2008231857A (en) * | 2007-03-23 | 2008-10-02 | Okumura Corp | Demolition equipment for tower-like structure |
| JP2008231858A (en) * | 2007-03-23 | 2008-10-02 | Okumura Corp | Demolition method for tower-like structure |
| JP2009256930A (en) * | 2008-04-15 | 2009-11-05 | Shimizu Corp | Demolition method for chimney |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5209214B2 (en) * | 2007-01-13 | 2013-06-12 | 株式会社藤林商会 | Building material processing method |
-
1999
- 1999-06-07 JP JP15968999A patent/JP3784997B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003176911A (en) * | 2001-12-10 | 2003-06-27 | Taisei Corp | Stack demolition device, and method of demolition of stack |
| JP2006283473A (en) * | 2005-04-04 | 2006-10-19 | Okumura Corp | Disassembling system and disassembling method of tower structure |
| JP4557776B2 (en) * | 2005-04-04 | 2010-10-06 | 株式会社奥村組 | Tower-like structure dismantling system and dismantling method |
| JP2008202294A (en) * | 2007-02-20 | 2008-09-04 | Okumura Corp | Demolishing apparatus |
| JP2008231857A (en) * | 2007-03-23 | 2008-10-02 | Okumura Corp | Demolition equipment for tower-like structure |
| JP2008231858A (en) * | 2007-03-23 | 2008-10-02 | Okumura Corp | Demolition method for tower-like structure |
| JP2009256930A (en) * | 2008-04-15 | 2009-11-05 | Shimizu Corp | Demolition method for chimney |
| CN104746894A (en) * | 2015-03-27 | 2015-07-01 | 中冶天工上海十三冶建设有限公司 | Modularized detaching construction method for large air separator cold box |
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|---|---|
| JP3784997B2 (en) | 2006-06-14 |
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